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Impaction nozzle for propellant driven metered dose aerosols

a technology of propellant or nozzle, which is applied in the direction of combustion types, transportation and packaging, lighting and heating apparatus, etc., can solve the problems of significant aerosol production, high pressure release, and not being available to the intended site of activity, so as to reduce the disadvantages of propellant driven inhalers

Active Publication Date: 2011-05-17
BOEHRINGER INGELHEIM INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is due to the fact that the propellant has a high vapor pressure and, consequently, when the valve is opened, a correspondingly high pressure is released.
These high speeds mean that a significant part of the aerosol produced is left suspended in the oro-pharyngeal cavity of the patient inhaling it and is not therefore available to the intended site of activity, the lungs.

Method used

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  • Impaction nozzle for propellant driven metered dose aerosols
  • Impaction nozzle for propellant driven metered dose aerosols
  • Impaction nozzle for propellant driven metered dose aerosols

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Embodiment Construction

[0023]The present invention solves this problem by providing a propellant driven inhaler with a valve or valve system by means of which at least two clouds of aerosol, or at least two spray jets, are produced that travel towards one another at an angle of greater than 0° and equal to or less than 180°, so that the individual aerosol particles at least partially impact with one another and thereby lose kinetic energy. The nozzle openings are preferably arranged so that the linear extensions of the nozzle channels beyond the opening and the longitudinal axis of the nozzle are situated in one plane. In other words, in all the embodiments, the regions of the channels that form the nozzle openings are preferably bent at an angle of greater than 0° and equal to or less than 90° relative to the main longitudinal axis of the valve in question. Angles between 0° and 45° are preferred. An angle of 0° means that the valve opening is aligned with the longitudinal side of the valve.

[0024]In a pr...

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PUM

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Abstract

Propellant gas inhaler fitted with a valve or valve system through which at least two clouds of aerosols or at least two jet streams are produced that travel towards one another at an angle from 0° to 180°, so that the individual aerosol particles at least partially impact with one another and lose kinetic energy thereby.

Description

RELATED APPLICATIONS[0001]This application claims the benefit under 119(a) of German Patent Application No. 10 2004 011 381 filed on Mar. 5, 2005, which is incorporated herein in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a nozzle or a nozzle system for propellant driven inhalers for the administration of aerosol formulations into the lungs by inhalation.[0004]2. Description of the Prior Art[0005]In propellant driven inhalers, the active substances are stored together with the propellant in cartridge-like canisters. These canisters generally comprise an aluminium container sealed with a valve cup made of aluminium in which a valve is embedded. A canister of this kind can be inserted in the inhaler like a cartridge and is either left there permanently or replaced by a new cartridge after use.[0006]Usually, the canister or container is formed from a casing made of aluminium, aluminium coated on the inside with an inert...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61M11/00F23D14/34B05B7/32F23D11/24F23D14/28A61M15/00B05B1/26B65D83/14
CPCB65D83/7532B65D83/28B05B1/26A61M15/009
Inventor BOECK, GEORG
Owner BOEHRINGER INGELHEIM INT GMBH